220 CONTRIBUTIONS TO ECONOMIC GEOLOGY, 1902. [bull. 2V6. 
cent and stalactitic limonite, and opened to a width of 40 feet without 
reaching the 1 imits. Small bands of garnet mixed with pyroxene occur, 
and I races of copper ores have been reported. Lying essentially upon 
the contact between the Carboniferous limestone and an igneous rock, 
the ore is believed to owe its origin largely to this relation. Its 
extent, however, is a matter of doubt, and the progress of the work 
disclosing what is underneath is watched with much interest. 
Similar bodies occur along the same limestone contact farther north, 
upon the west side of the MeOloud, and should the mass referred to 
above prove a large deposit it may lead to the development of an 
important industry in that region. 
